... unimpeded support TFcard . Rechargeable Li-ion Battery mini digital sound box speaker aluminum housing1. Powered via: Built- ... in Li-ion battery/USB/DC 5V2. Insert one TF card, it can ... jack7. Audio Source: TF card,PC,MP3,MP4,MD,CD,DVD player, Mobile phone,etc 8. Switch ... .HOW TO USE:checklistthere are wm vibration speaker,usb cable,usage manual in the box.connection of ...